Ludwig durr



(No Model.)

L. DURR. OIL VAPOR LAMP.

- No. 453,440. Patented June 2, 1891.

UNITED STATES PATENT OFFICE.

LUDWIG DURR, or BREMEN, GERMANY.

OIL-VAPOR LAM P.

SPECIFICATION forming part of Letters Patent No. 453,440, dated June 2,1891. Application filed July 28, 1890. Serial No. 360,240. (No model.)

To all whom it may concern:

Be it known that I, LUDVVIG DiiRR, a subject of the Free State ofBremen, residing in Bremen, German Empire, have invented an Improvementin Oil-Lamps; and I do hereby declare the following to be a full, clear,and exact description of my invention.

In this oil-vapor lamp the illuminatingflame is intended to impingeagainst the vaporizing-coil and thus be utilized to convert the oil intovapor.

In the accompanying drawings, Figure 1 is a side elevation, partly insection; Fig. 2, a detailed end view of the vaporizing-coil and burner.

In the drawings, a represents a suitable tank for containing the liquidfuel and provided with a funnel h and stop cock g, through which thetank may be filled.

A pipe I), provided with a regulating-valve f, conducts the oil to thevaporizer. This consists of a coil of pipe 0, forming a continuation ofthe conduit-pipe b and located within a casing A. The end of the coil isextended and carried back longitudinally along the outer side thereof,and its rear end is bent inwardly and turned forward centrally of thecoil, thus providing a burner d, which directs the flame centrallythrough the coil from its rear to its front end and through an openingin the front of the case A. A valve is provided in the burner, as at e.The casing is formed with air-conduits 2, leading from the front endrearward and discharging in proximity to the burner, so that when thevapor is ignited the flame will induce a current of air within thecasing, which, mingling with the vapor, will produce anilluminating-fluid.

In operating the device a suitable piece of wick or wadding steeped inpetroleum, is placed in the casing and igniting, thus heating the coiland burner and vaporizing the oil, and when the valve 6 is opened thevapor issuing from the burner will be ignited, producing theilluminating-flame, as represented. This flame, as before stated, passesfrom end to end of the coil, and is thus utilized to vaporize the oiltherein so long as the valves are open. I claim as my invention Incombination, the tank, the conduit-pipe, a coil of tubing forming acylindrical channel for the flame, a casing inclosing the coil andhaving a front plate with an opening in line with the center of thechannel, the conduit 2, extending from the front of the casing to rearof the coil and communicating through an openingin the rear with thechannel, the coil having an extension from its front to its rear end,passing between the coil and the inside of the casing, and terminatingin a burner-opening within the coil, substantially as described.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

LUDWIG DURR.

